[1]
S. Saprudin, L. Liliasari, A. Setiawan, and A. S. Prihatmanto, “Optical Gamification (OG); Serial Versus Random Model to Improve Pre-Service Physics Teachers’ Concept Mastery”, Int. J. Emerg. Technol. Learn., vol. 15, no. 09, pp. pp. 39–59, May 2020.